1<!--$Id: mutex_unlock.so,v 10.2 2007/09/21 20:06:03 bostic Exp $--> 2<!--Copyright (c) 1997,2008 Oracle. All rights reserved.--> 3<!--See the file LICENSE for redistribution information.--> 4<html> 5<head> 6<title>Berkeley DB: DB_ENV->mutex_unlock</title> 7<meta name="description" content="Berkeley DB: An embedded database programmatic toolkit."> 8<meta name="keywords" content="embedded,database,programmatic,toolkit,btree,hash,hashing,transaction,transactions,locking,logging,access method,access methods,Java,C,C++"> 9</head> 10<body bgcolor=white> 11<table width="100%"><tr valign=top> 12<td> 13<b>DB_ENV->mutex_unlock</b> 14</td> 15<td align=right> 16<a href="../api_c/api_core.html"><img src="../images/api.gif" alt="API"></a> 17<a href="../ref/toc.html"><img src="../images/ref.gif" alt="Ref"></a></td> 18</tr></table> 19<hr size=1 noshade> 20<tt> 21<b><pre> 22#include <db.h> 23<p> 24int 25DB_ENV->mutex_unlock(DB_ENV *dbenv, db_mutex_t mutex); 26</pre></b> 27<hr size=1 noshade> 28<b>Description: DB_ENV->mutex_unlock</b> 29<p>The DB_ENV->mutex_unlock method unlocks the mutex locked by 30<a href="../api_c/mutex_lock.html">DB_ENV->mutex_lock</a>.</p> 31<p>The DB_ENV->mutex_unlock method may not be called before the <a href="../api_c/env_open.html">DB_ENV->open</a> method is called.</p> 32<p>The DB_ENV->mutex_unlock method 33returns a non-zero error value on failure 34and 0 on success. 35</p> 36<b>Parameters</b> <br> 37 <b>mutex</b><ul compact><li>The <b>mutex</b> parameter is a mutex previously locked by 38<a href="../api_c/mutex_lock.html">DB_ENV->mutex_lock</a>.</ul> 39<br> 40<br><b>Errors</b> 41<p>The DB_ENV->mutex_unlock method 42may fail and return one of the following non-zero errors:</p> 43<br> 44<b>EINVAL</b><ul compact><li>An 45invalid flag value or parameter was specified.</ul> 46<br> 47<hr size=1 noshade> 48<br><b>Class</b> 49<a href="../api_c/env_class.html">DB_ENV</a> 50<br><b>See Also</b> 51<a href="../api_c/env_list.html">Database Environments and Related Methods</a> 52</tt> 53<table width="100%"><tr><td><br></td><td align=right> 54<a href="../api_c/api_core.html"><img src="../images/api.gif" alt="API"></a><a href="../ref/toc.html"><img src="../images/ref.gif" alt="Ref"></a> 55</td></tr></table> 56<p><font size=1>Copyright (c) 1996,2008 Oracle. All rights reserved.</font> 57</body> 58</html> 59
